Self-oiling sleeve.



H. A. DAVIS. SELF OILING SLEEVE. APPLICATION FILED JUNE 8, 1908.

917,93 1 Patented Apr. 13, 1909.

I lUiTlESSS alnuentor- 754s NORRIS PETERS 120., WASHINGYON. D. c

UNEIED dTAiiEd earner HENRY A. DAVIS, OF BENTON HARBOR, MICHIGAN.

SELF-CELINE SLEEVE.

T 0 all whom it may concern:

Be it known that I, HENRY A. DAVIS, citizen of the United States, and a resident of Benton Harbor, in the county of B rrien and State of iilichigan, have invented certain new and useful improvements in Self-Oiling Sleeves, of which the following, when taken in connection with the drawing accompanying and forming part hereof, is a full and complete description sufhcient to enable those skilled in the art to which it pertains to understand, make, and use the same.

This invention relates to sleeves used in conjunction with the hubs of pulleys, (by being inserted therein), forming, when so combined, what is known self oiling hubs, ordinarily used on pulleys, and particularly on split pulleys. And the object of this invention is to obtain a sleeve to be used in a hub, which is durable, simple in construction and easily lubricated and maintained with a lubricant therein, and which may be applied to a split or other pulley, to form a part of the huo thereof.

In the drawing referred to Figure 1 is a vertical sectional view on line 11 of Fig. 2, viewed in the direction indicated by the arrows. Fig. 2 is an end elevation of a device embodying this invention, with the internal construction thereof indicated by broken lines: and Fig. 3 is a side elevation of a portion of a split pulley, showing the hub thereof in end elevation, and an end elevation of a device embodying this invention inserted in said hub.

A reference letter applied to designate a given part is used to indicate such part, throughout the several figures of the drawing, wherever the same appears.

A is a portion of a split pulley, and a, a, are the parts of the hub thereof. When the parts a, a, are secured together they form the hub of the wheel A, and to fit the wheel to run as a loose pulley the device embodying my invention issecured in place between such parts a, a.

C is a metal casing, preferably of steel, malleable iron, or other ductile metal.

D is a metal thimble, preferably of cast iron.

E, E, E, respectively, are longitudinally extending ribs on the outside of the thimble D.

The hole B and the peripheral surface of the ribs E, on thimble D are concentric, and such ribs are arranged relatively to the inner Specification of Letters Patent.

Application filed June 8, 1908.

Patented April 13, 1809.

Serial No. $7,379.

; diameter of the casing C so that when the thimbles are forced into the casing the thimbles cannot turn in the casing and will be maintained in alinement while a chamber or space will be obtainedbetween the thimbles and the casing. As is shown in Fig. 1, there are two tlrinibles D in casing C; one thereof is forced into the casing at one end'of such casing, and the other is forced thereinto at the other end thereof. The length of such thimbles D, D, is such that when the thimbles are in place there is a space between the ends thereof, in which space an oil conductor, hereinafter described, is contained.

F, F, are annular grooves in the thiinbles D, D, respectively, to collect oil which may flow from the space or chamber H along between the shaft in hole or aperture B and the thinibles, and G, G, are radial ducts communicatuig at one end with the annular groove F and at the other end with the space or chamber H.

I, l, are bolts and J, J, are nuts on bolts 1, I. The parts a, a, of the hub of wheel A are held together, and also the casing C is held in place between the parts a, c, by th bolts 1, i, and nuts J, J, thereon.

K is a hole in the end of one of the thinlbles I), through which hole oil is forced into the space or chamber H, and L is a screw plug, (see Fig. 3) in hole K to stop or close the same.

M is a ring in the chamber or space H. Ring M is of sufficient internal diameter so that when such ring is resting on the inner surface of the casing C it will not come in contact with the upper surface of the shaft, but

will be a slight distance from it, when a shaft is inserted through hole B, (or when the pulley is put on a shaft).

The operation of the device is :Revolu tion of the pulle A produces corresponding rotation of the casing C and thimbles D, D. And the revolution of the sing 0 produces revolution of the ring M. ien the pulley it is rotated slowly on a shaft the oil in chamber H which would, in the absence of the ring M, remain on the bottom of such chamher, is carried by such ring up and over the shaft, and some of the oil so carried over by the ring will drop therefrom on to the shaft, and lubricate it. .Yhen such pulley A is rotated rapidly, there is, in the absence of the rin M, a body of oil formed within the space H, by centrifugal force, and when the ring M is present, even if it be carried by the casing C to rotate substantially with it, such body of if oil is broken thereby and some thereof falls on to the shaft and lubrica tes it.

Oil on the shaft in hole B will gradually extend from chamber or space H along the shaft to the annular grooves F, F, and as oil collects in such grooves it is thrown by cen trifugal force through the ductsG', G, back into such chamber H. N o appreciable quantity of oilwill, in practice, flow from the device at the ends'of the t'himbles thereof Oil isinserted in chamber H by removing the plugL through the hole K, and such hole is again stopped by such plug.

having thus described my invention, and the construction and operation of a device embodying the same, what I claim as new and desire to secure by Letters Patent'is:

1', A sleeve comprising a casing of ductile metal, in combination with thiinbles, such thiinbles respectively consisting of a circular partfitting closely in the casing,- and pro vided with longitudinally extending ribs, the peripheral-faces whereof fit closely to the casing, and provided with apertures for a shaft, the length of such thimbl'es and casing arranged to obtain a space between the inner ends of the thimbles, and a ring within the casing; and between theen'ds of the thimbles; substantially as described.

2. A sleeve consistingof a casing of ductile metal combination with thim'bles and a ring-, such thimbl'es consisting of a circular p-art fitting closely inthe casing and prov'ided with longitudinally extending ribs the peripheral faces whereof fit closely to the ertures for a shaft, annular grooves near the ends of thethirnbles aroiind the apertures for I,

the shaft, and ducts from such annular grooves to the chamber between the thimbles and the casing, and the length of such casing and thiinbles arranged to obtain a space between the inner ends of the thimbles, in which space the ring is placed: substantially as described.

3. A sleeve consisting of a casing of duc tile n1etal, in combination with thimbles and a ring, such thimbles consisting of circular end parts fitting closely in the casing ant provided with longitudinally extending ribs from the inner face of the circular ends, the peripheral faces of the ribs arranged to iit closely to the casing, and such thimbles provided with apertures for a shaft, annular grooves'near the ends of the thinibles around the apertures for a shaft, and ducts from such annular grooves to the chamber between the thinibles and the casing, the length of such casing and thinibles arranged to obtain a space between the inner ends of the thimbles, in -which space the ring is placeo, and such sleeve provided with an aperture through which a lubricant may be in-' troduced into the chamber thereof, and a removable plug to close such aperture: substant1ally as described.

CHARLES TURNER BROWN, Cona- A. ADAMS. 

